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change the match to full match and updating the regex for CVE-2026-44899 #443

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Merged
lepture merged 1 commit into from
May 28, 2026
+3 −3
Merged

change the match to full match and updating the regex for CVE-2026-44899 #443

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6 changes: 3 additions & 3 deletions src/mistune/directives/image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@

__all__ = ["Image", "Figure"]

_num_re = re.compile(r"^\d+(?:\.\d*)?(?:px|ch|em|rem|ex|rex|vw|vh|%)?$")
_num_re = re.compile(r"^\d+(?:\.\d+)?(?:px|ch|em|rem|ex|rex|vw|vh|%)?$")
_allowed_aligns = ["top", "middle", "bottom", "left", "center", "right"]


Expand All @@ -29,9 +29,9 @@ def _parse_attrs(options: Dict[str, Any]) -> Dict[str, Any]:

height = options.get("height")
width = options.get("width")
if height and _num_re.match(height):
if height and _num_re.fullmatch(height):
attrs["height"] = height
if width and _num_re.match(width):
if width and _num_re.fullmatch(width):
attrs["width"] = width
if "target" in options:
attrs["target"] = escape_url(options["target"])
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